This script was provided to me by my professor to use with a form we were to create using html/javascript to send e-mail. My form is working fine, but when the form is submitted, there is an internal server error. It seems there may be some syntax errors in the perl script, but I cannot figure it out. Any suggestions?
#!/usr/local/bin/perl
# ------------------------------------------------------------
# Form-mail.pl, by Reuven M. Lerner (reuven@the-tech.mit.edu).
#
# Last updated: March 14, 1994
#
# Form-mail provides a mechanism by which users of a World-
# Wide Web browser may submit comments to the webmasters
# (or anyone else) at a site. It should be compatible with
# any CGI-compatible HTTP server.
#
# Please read the README file that came with this distribution
# for further details.
# ------------------------------------------------------------
# ------------------------------------------------------------
# This package is Copyright 1994 by The Tech.
# Form-mail is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
# Form-mail is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with Form-mail; see the file COPYING. If not, write to the Free
# Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
# ------------------------------------------------------------
# Define fairly-constants
# This should match the mail program on your system.
$mailprog = '/usr/lib/sendmail';
# This should be set to the username or alias that runs your
# WWW server.
$recipient = getpwuid($<);
$recipient .= "\@";
$recipient .= `hostname`;
if ($recipient eq "\@csprofessor.com") {
$recipient = $ENV{'SERVER_ADMIN'};
}
# Print out a content-type for HTTP/1.0 compatibility
print "Content-type: text/html\n\n";
# Get the input
read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
# Split the name-value pairs
@pairs = split(/&/, $buffer);
foreach $pair (@pairs)
{
($name, $value) = split(/=/, $pair);
# Un-Webify plus signs and %-encoding
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
# Stop people from using subshells to execute commands
# Not a big deal when using sendmail, but very important
# when using UCB mail (aka mailx).
# $value =~ s/~!/ ~!/g;
# Uncomment for debugging purposes
# print "Setting $name to $value<P>";
$FORM{$name} = $value;
}
# If the comments are blank, then give a "blank form" response
unless ($FORM{'realname'}) { &blank_response("name"); }
unless ($FORM{'email'} ) { &blank_response("email"); }
unless ($FORM{'message'} ) { &blank_response("message"); }
unless ($FORM{'rating'} ) { &blank_response("rating"); }
# Print a title and initial heading
print "<html>\n";
print "<Head><Title>Thank you</Title></Head>";
print "<Body><H1>Thank you</H1>";
print "<p>Thank you for sending your comments!<br>";
print "</body></html>";
# Now send mail to $recipient
open (MAIL, "|$mailprog $recipient") || die "Can't open $mailprog!\n";
print MAIL "To: sgifford\@csprofessor.com\n";
#print MAIL "To: $recipient\n";
print MAIL "From: $FORM{'email'} ($FORM{'realname'})\n";
print MAIL "Reply-to: $FORM{'email'} ($FORM{'realname'})\n";
print MAIL "Subject: Web Site Comments\n\n";
print MAIL "------------------------------------------------------------\n";
print MAIL "$FORM{'email'} ($FORM{'realname'}) Stopped by\n";
print MAIL "Phone: $FORM{'phone'}\n";
print MAIL "Birthday: $FORM{'bday'}\n";
print MAIL "------------------------------------------------------------\n";
print MAIL "And this is what $FORM{'realname'} had to say:\n\n";
print MAIL "$FORM{'message'}";
print MAIL "\n------------------------------------------------------------\n";
print MAIL "Web Site Rating: $FORM{'rating'}";
print MAIL "\n------------------------------------------------------------\n";
print MAIL "Server protocol: $ENV{'SERVER_PROTOCOL'}\n";
print MAIL "Remote host: $ENV{'REMOTE_HOST'}\n";
print MAIL "Remote IP address: $ENV{'REMOTE_ADDR'}\n";
print MAIL "------------------------------------------------------------\n";
close (MAIL);
# Make the person feel good for writing to us
# ------------------------------------------------------------
# subroutine blank_response
sub blank_response
{
print "<html>\n";
print "<Head><Title>Incomplete Comment Form</Title></Head>";
print "<Body><H1>Incomplete Comment Form</H1>";
print "<p>";
print "The $_[0] field appears to be blank! ";
print "Please finish filling out the form and re-submit your comments. ";
print "</body></html>";
exit;
}
Before you post, read our: 
PERL mail form - Internal Server Error
